chore: update max-concurrency task status, spawn next generation

tasks/reactive-max-concurrency.md

@@ -1,7 +1,7 @@
 ---
 id: reactive/max-concurrency
 name: Implement maxConcurrency semaphore for Parallel groups
-status: pending
+status: completed
 depends_on:
   - reactive/node-status
   - component/parallel